I have managed to blow fuses in my battery power supply by shorting the unconnected 2.1mm center female power plug. On some of these connectors, the center female section protrudes out of the end of the plug. This piece of the plug is easy to short to ground. Elecraft recommends connecting the power plug to the KX3 before turning on the power supply, which is good advice. If your power supply is always on, like my batteries, be really careful about shorts and carry spare fuses.

There may be a blown fuse in your power supply.

73 Bill AE6JV

On 12/27/14 at 2:03 PM, [email protected] (Mark, KE6BB via Elecraft) wrote:

It sounds like the radio is not getting any power. I would suspect the power supply and cables before suspecting a problem with the radio.
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